I'm seeking to get some clarificaiton on the Command trait. I know it gives +1 to Range and Damage for all allies within 3 spaces, but does the Command trait effect the creature that has command itself?

Example: Master Beastman had Command and +2 Damage, does that mean when I roll for damage it is +2 to the roll result or +3 for when I'm rolling for the Master Beastman?

Here is a direct copy/paste from the pdf rulebook:

Command

A figure with

Command adds 1 to the damage and range of all attacks made by friendly figures within three spaces of it (including itself, and ignoring line of sight). If there are multiple figures with Command within three spaces of a figure, the effects stack (e.g., the figure would add 2 to the damage and range of its attacks if two figures with the Command ability were within three spaces of it).

Therefore it adds +3 damage

Hope this Helps!